摘要:
Disclosed is a technique for producing bichromal balls that are adapted for use in high temperature applications. The bichromal balls find particular application in signs and display devices that can be used in environments in which the temperature exceeds 40° C.
摘要:
An electrophoretic display device includes a multiplicity of individual reservoirs containing a display medium between conductive substrates, at least one of which is transparent, wherein the display medium includes one or more set of colored particles in a dielectric fluid, and wherein the multiplicity of individual reservoirs are defined by a unitary grid whose walls segregate the reservoirs. The gird may be formed via photolithography or from a master stamp derived from a mold of the grid pattern.
摘要:
An electrophoretic display medium includes one or more set of colored particles in a dielectric fluid, and wherein at least one of the one or more set of particles are particles having thereon at least one polyelectrolyte coating. The display medium is included in an electrophoretic display device by including the medium in a multiplicity of individual reservoirs of a display layer or layers that is located between conductive substrates.
摘要:
A display member having improved optical contrast and brightness. The display member includes bichromal capsules, an absorptive layer, an adhesive layer, a substrate and a top layer. The bichromal capsules form a close-packed monolayer configuration positioned on the absorptive layer. The adhesive layer is adjacent to the absorptive layer. The absorptive layer is formed on the substrate. The top layer is formed adjacent the adhesive layer. A method for producing a display member with high optical contrast and brightness. The method includes forming an absorptive layer on a substrate. A close-packed monolayer configuration of bichromal capsules is formed on the absorptive layer by exposing the absorptive layer to a plurality of bichromal capsules. A top layer is formed adjacent the adhesive layer.
摘要:
An image forming method composed of: (a) providing a reimageable medium composed of a substrate and a photochromic material, wherein the medium is capable of exhibiting a color contrast and an absence of the color contrast; (b) exposing the medium to an imaging light corresponding to a predetermined image to result in an exposed region and a non-exposed region, wherein the color contrast is present between the exposed region and the non-exposed region to allow a temporary image corresponding to the predetermined image to be visible for a visible time; (c) subjecting the temporary image to an indoor ambient condition for an image erasing time to change the color contrast to the absence of the color contrast to erase the temporary image without using an image erasure device; and (d) optionally repeating procedures (b) and (c) a number of times to result in the medium undergoing a number of additional cycles of temporary image formation and temporary image erasure.
摘要:
A liquid crystal composition including: (a) a liquid crystal; and (b) a polymerized liquid crystal domain stabilizing compound comprising a dipolar monomer and a non-dipolar monomer.
摘要:
A cholesteric display including a liquid crystalline mixture having a dipolar dopant dissolved in the liquid crystalline mixture and the resulting mixture is reflecting light in the visible range of the spectrum when in planar state. In accordance with another aspect, a process includes forming a composition with a dipolar molecule to result in a liquid crystal dipolar dopant, and liquid crystal is added to the composition. In accordance with still another aspect, a device includes a liquid crystal composition includes a cholesteric liquid and a dipolar dopant. The liquid crystal composition is switchable between a focal-conic state and a planar state in the presence of an electric field and is stable in the respective state when the electric field is removed.
摘要:
Disclosed is an encapsulant oil and associated method for producing encapsulated bichromal balls or particles. In this regard, bichromal balls are encapsulated within a mixture of low viscosity polysiloxane oil and a bifunctional component material. The bifunctional component material includes a hydrocarbon functional group to provide suitable wettability with the balls or particles and a siloxane functional group which is compatible with the siloxane oils.
摘要:
A compound having formula (1) wherein: A1 is an electron acceptor moiety; C1 is a conjugated bridging moiety; D1 is an electron donor moiety, S1 is a hydrocarbon, a heterocyclic moiety, or a hetero-acyclic moiety; and a′ is an integer, excluding an excluded compound defined by a′ is 2, A1 is cyano, C1 is phenyl, D1 is nitrogen, and each S1 is the same alkyl group.
摘要:
Disclosed is a display comprising an arrangement of a plurality of optically anisotropic rotatable elements, each of the rotatable elements having a surface in contact with an enabling fluid, the rotatable elements being electrically dipolar in the presence of the enabling fluid and thus being subject to rotation upon application of an electric field, the rotatable elements being free to rotate in place but not free to translate substantially so as to disrupt the arrangement of rotatable elements, wherein a first portion of the surface contains a mixture of a chelating agent and a spiropyran material of the formula wherein n is an integer representing the number of repeat —CH2— units and R is —H or —CH═CH2, and wherein a second portion of the surface contains substantially no spiropyran.